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Tag: lemon sharks

13 amazing things scientists discovered about sharks in 2013

Posted on December 28, 2013December 30, 2013 By David Shiffman 5 Comments on 13 amazing things scientists discovered about sharks in 2013
Conservation, Science

Other than a certain week in August whose name we shall not speak here, 2013 was a great year for both shark science and the communication of that shark science. There were many important and fascinating discoveries, and many of the world’s top media outlets covered them. Presented here is a list of 13 amazing scientific discoveries made in 2013, in no particular ranking order. To make the list, research must have been published in a peer-reviewed scientific journal in 2013, and someone else other than me must have also thought it was awesome (i.e. it received mainstream media or blog coverage). In the interest of objectivity, I did not include any papers that I or my lab were directly involved with. Whenever possible, I’ve linked to an accessible version of the paper.

 

1) A two-headed bull shark!

From Wagner et al. 2013
From Wagner et al. 2013

 

Citation: Wagner, CM, Rice, PH, and Pease, AP 2013. First record of dicephalia in a bull shark Carcharhinus leucas foetus from the Gulf of Mexico. Journal of Fish Biology 82: 1419-1422.

Brief description: Researchers presented the first case of a bull shark embryo with 2 heads (the mother was caught by a Florida fishermen). In response to the most common question I received about this study, no, this animal would not have survived to adulthood.  While this is a cool discovery, the broader significance is somewhat minimal. As I told science writer Douglas Main in an interview about a similar study, “There have been a number of reports of deformed shark and ray embryos in recent years— two heads, one eye, etc. There’s no evidence to suggest these defects represent a new phenomenon or that they are harmful to shark populations as a whole.”

Media coverage highlights: A figure from this study was named one of the coolest science photos of the year by the International Science Times. It was also covered by National Geographic, the Guardian, and TIME magazine.

Read More “13 amazing things scientists discovered about sharks in 2013” »

Lemon Sharks Protected in Florida!

Posted on February 19, 2010 By David Shiffman
Conservation, Science

From OceanicDefense.org

Several months ago, I asked for your help to get 10,000 signatures on a petition to protect lemon sharks in Florida coastal waters. Thanks to your signatures and the hard work of dedicated activists in Florida, we have succeeded! The Florida Fish and Wildlife Commission has agreed to protect lemon sharks!

Read More “Lemon Sharks Protected in Florida!” »

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